The US has enjoyed 30 years of relatively stable relations with both Israel and Egypt, thanks in large part to the peace plan outlined by the historic Camp David Accords. The harmony between the two rivals has provided a key element of stability in an otherwise turbulent Middle East. But Egypt's bumpy transition from the autocratic rule of President Hosni Mubarak to its post Arab Spring reality - has put many on edge. What challenges does the new Egypt post for American policymakers and US allies in the region?